<template>
     <header class="header">
            <!-- 头部的第一行 -->
            <div class="top">
                <div class="container">
                    <div class="loginList">
                        <p>尚品汇欢迎您！</p>

                        <p v-if="userInfo.name">
                            你好,&emsp;<span>{{userInfo.name}}</span>
                            <button @click="logout">退出</button>
                        </p>

                        <p v-else>
                            <span>请</span>
                            <router-link to="/login">登录</router-link>
                            <router-link to="/register" class="register">免费注册</router-link>
                        </p>
                    </div>
                    <div class="typeList">
                        <a href="###">我的订单</a>
                        <router-link to="/shopCart">我的购物车</router-link>
                        <a href="###">我的尚品汇</a>
                        <a href="###">尚品汇会员</a>
                        <a href="###">企业采购</a>
                        <a href="###">关注尚品汇</a>
                        <a href="###">合作招商</a>
                        <a href="###">商家后台</a>
                    </div>
                </div>
            </div>
            <!--头部第二行 搜索区域-->
            <div class="bottom">
                <h1 class="logoArea">
                    <router-link class="logo" title="尚品汇" to="/home">
                        <img src="./images/logo.png" alt="">
                    </router-link>
                </h1>
                <div class="searchArea">
                    <form action="###" class="searchForm">
                        <input type="text" id="autocomplete" v-model="keyword" class="input-error input-xxlarge" />
                        <button class="sui-btn btn-xlarge btn-danger" type="button" @click="search">搜索</button>
                    </form>
                </div>
            </div>
        </header>
</template>

<script>
import {mapState} from 'vuex'
    export default {
        name:"HeaderPage",
        data() {
            return {
                keyword:''
            }
        },
        methods: {
            search(){
                // 1. 全部使用query参数
                // const {query} = this.$route
                // this.$router.push({
                //     name:'search',
                //     query:{
                //         ...query,
                //         keyword:this.keyword || undefined
                //     }
                // })

                // 2.keyword 是params参数 params 和 query结合使用
                const {query} = this.$route;
                console.log(query);
                this.$router.push({
                    name:"search",
                    params:{
                        // 如果没有值写在输入框中 则是undefined
                        // 路由会自动将值为undefined的参数过滤掉
                        keyword:this.keyword || undefined
                    },
                    query
                })
            },
            // 登出
            logout(){
                this.$store.dispatch('user/userLogout')
            }
        },
        computed:{
            ...mapState('user',['userInfo'])
        },
        mounted() {
            this.$eventBus.$on('remove-keyword',()=>{
                this.keyword = ''; // 清空搜索框
            });
        },
        beforeDestroy() {
            this.$eventBus.$off("remove-keyword");
        },
    }
</script>

<style lang="less" scoped>
.header {
        &>.top {
            background-color: #eaeaea;
            height: 30px;
            line-height: 30px;

            .container {
                width: 1200px;
                margin: 0 auto;
                overflow: hidden;

                .loginList {
                    float: left;

                    p {
                        float: left;
                        margin-right: 10px;

                        .register {
                            border-left: 1px solid #b3aeae;
                            padding: 0 5px;
                            margin-left: 5px;
                        }
                    }
                }

                .typeList {
                    float: right;

                    a {
                        padding: 0 10px;

                        &+a {
                            border-left: 1px solid #b3aeae;
                        }
                    }

                }

            }
        }

        &>.bottom {
            width: 1200px;
            margin: 0 auto;
            overflow: hidden;

            .logoArea {
                float: left;

                .logo {
                    img {
                        width: 175px;
                        margin: 25px 45px;
                    }
                }
            }

            .searchArea {
                float: right;
                margin-top: 35px;

                .searchForm {
                    overflow: hidden;

                    input {
                        box-sizing: border-box;
                        width: 490px;
                        height: 32px;
                        padding: 0px 4px;
                        border: 2px solid #ea4a36;
                        float: left;

                        &:focus {
                            outline: none;
                        }
                    }

                    button {
                        height: 32px;
                        width: 68px;
                        background-color: #ea4a36;
                        border: none;
                        color: #fff;
                        float: left;
                        cursor: pointer;

                        &:focus {
                            outline: none;
                        }
                    }
                }
            }
        }
    }
</style>